Can Eagles win Super Bowl outright as +5 underdogs? Here's how eight other major SB dogs won it all

The Eagles opened as +5.5 underdogs and only a multimillion-dollar bet from one player on Philadelphia late last week has moved the line to +4.5 on a few books. It’s expected to drift back up to +5.5 by kick. That would make the Eagles the largest dogs in nine years since the 2009 Cardinals. Who are the eight underdogs of +5 or more who won the Super Bowl outright and how did they do it? Here are their stories.

The America's Game episode of the 2015 Denver Broncos, featuring DeMarcus Ware, Peyton Manning and game MVP Von Miller and narrated by Trey Parker.

NFL Films

2015 Broncos (+5)

Cam Newton had struggled to coordinate his talents since being the #1 overall selection in the 2011 NFL Draft. But in 2015, even with a career defensive mind as his head coach in Ron Rivera, the former Auburn quarterback and the Carolina Panthers offense hummed. With Newton combining the run and pass like no other NFL QB had, the Panthers became the highest-scoring offense in pro football and roared into the Super Bowl with just a single loss after pummeling the Cardinals in the NFC title game 49-15.

But neither Carolina nor Newton had seen a defense like that of the Denver Broncos in 2015. Even with elderly and rag-armed Peyton Manning a shell of his former self, the Broncos' defense ripped four takeaways from Carolina that ultimately were the difference in a 24-10 win. Newton was sacked a career-high 9 times including a pair of strip-sacks by linebacker and game MVP Von Miller that scored and set up two of Denver's three touchdowns.